Micro-workout benefits and expert tips on how to to get started in just 20 seconds

No time to work out? Micro-workouts can help change that.

Fitting an hour of exercise into your busy day can feel impossible, but proponents of micro-workouts say they offer a way to get exercise in more approachable chunks.

Micro-workouts are a "relatively small commitment in time and intensity for a relatively big payoff," explains Walter Gjergja, former professional athlete and co-founder and chief wellness officer at fitness app Zing Coach.